The suggestion to have one or a few themes or focuses in your collection is espeically important for smaller (less than a few hundered pieces) collections. Without focus, your "collection" is just another drawer full of assorted knives.
So, after looking at catalogs, web sites, books, and maybe attending a few shows, pick a theme or two and focus on those knives. You can pick one maker or one manufacture, a certain period, a certain style, whatever. I have a friend who's collection, at first glance, seems random. But, on careful study, you'll find a theme. He collects knives made in San Fancisco. This includes just about every kind of knife you can imagine, but they're all made in 'Frisco.
Having a focus not only makes your collection more interesting and more valuable, but it makes your decisions easier too. I can go to a show, see a wonderful knife, examine it, handle it (with permission, of course), ask about it, learn about it, compliment it, and all along know that there's no danger of me having to buy it because it doesn't have two handles that counter-rotate around the tang. This makes deciding which knives I want to buy for my collection much easier.
It also cuts down on the amount of money you have to spend on non-knife stuff. Instead of having to buy every knife book out there, you'll only need the few that are specific to your knives, for example.
In selecting your foci, consider what is of personal or professional interrest to you. If, for example, you work in emergency services, perhaps as a 911 Supervisor, you might be interrested in knives used in emergency services. If, for example, you're interrested in martial arts, then you might find some interrest there, depending on which arts you are interrested in. This will make your collection even more personally interresting to you. It may also put you in a unique position to acquire specific pieces for your collection. And, you can leverage your existing knowlege.
Chuck
[This message has been edited by Gollnick (edited 11 July 1999).]